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### Question: What to expect if I have Tetralogy of fallot  (Outlook/Prognosis)?
### Response: Most cases can be corrected with surgery. Babies who have surgery usually do well. Ninety percent survive to adulthood and live active, healthy, and productive lives. Without surgery, death usually occurs by the time the person reaches age 20.
Patients who have continued, severe leakiness of the pulmonary valve may need to have the valve replaced.
Regular follow-up with a cardiologist to monitor for life-threatening arrhythmias (irregular heart rhythms) is recommended.